初中英语河北加拿大版读物05

[06:57.65]a schoolteacher from Russia first wrote about about space travel.
[07:03.60]He knew that a rocket for space would need a lot of fuel.
[07:09.66]He thought of stacking many rockets on top of each other.
[07:15.02]As one rocket used up its fuel,the next rocket would fire.
[07:21.08]This is how rockets are built today.
[07:25.23]Danny:Look!I have stacked these books on top of each other.
[07:30.87]What kind of fuel is used in today's rockets?
[07:36.23]Most of today's rockets use gasoline and liquid oxygen.
[07:42.39]Why oxygen? Because gasoline needs oxygen to burn.
[07:48.87]There isn't any oxygen in space.
[07:53.23]There isn't any air at all!Jenny:Do you remember what "oxygen" is?
[08:00.60]In the last unit, oxygen made the candle burn inside the jar.
[08:08.05]When the oxygen was used up,the candle stopped burning.
[08:13.11]Who was the first man in space?In 1961,
[08:19.67]the Soviet Union put the first man in space, Yuri Gagarin.In 1969,
[08:28.50]Neil Armstrong from the U.S.was the first man to walk on the moon.
[08:35.16]Flying Donuts!Danny:Do you like my invention?
[08:41.48]Danny has thought of a new kind of transportation.
[08:46.63]Now he is going to make his presentation to the class.
[08:51.10]Last night,he went to bed very late.
[08:55.95]He was building his invention!He took an old backpack.
[09:02.01]Then he made two cardboard rockets.
[09:06.38]He painted them red and glued them onto the backpack.
[09:12.02]In the morning,on the way to school, he bought ten donuts.
[09:18.08]Now,Danny is standing at the front of the classroom.
[09:24.45]invention.It's called Flying Donuts.
[09:32.11]With my invention,you don't need an airplane to fly.
[09:38.27]First,you put on Flying Donuts.Then you turn it on and jump into the air!
[09:47.94]Teacher:Okay,Danny.But why is it called Flying Donuts?Danny:Look inside!See?
[09:56.19]I put ten donuts in there.Jenny:What do the donuts do,Danny?
[10:03.27]Danny:The donuts are the fuel.Every donut will carry you one kilometre.
[10:11.42]To go ten kilometres you need ten donuts.
[10:17.17]Teacher:Will other types of food make the rockets go?
[10:22.32]Danny:Yes,but donuts are best.
[10:27.64]Teacher:Why is that?Danny:Because you can eat them when you get hungry!
[10:34.41]Brian:Will Danny's invention really work?
[10:38.25]I don't think so,but he had fun and he used his imagination!
[10:43.21]You can,too!